Stepping in for the injured fighter is “The Ultimate Fighter 15” finalist Al Iaquinta (5-2-1 MMA, 0-1 UFC), who returns after an injury forced him to withdraw from a matchup with Joe Proctor at UFC 159.

The Las Vegas Sun first reported the switch, which then was confirmed by UFC officials. UFC 164 takes place Aug. 31 at Bradley Center in Milwaukee. The event’s main-card airs live on pay-per-view following prelims on FOX Sports 1 and Facebook.

Couture vs. Iaquinta likely will serve as part of the preliminary card.

Earlier today, Mulhern tweeted a picture of his injured hand to Couture, who responded that he’d be happy to meet the fighter when he was healthy.

Couture, who’s the son of UFC Hall of Famer Randy Couture, hopes to rebound from a setback in his April octagon debut, which ended in a second-round TKO loss to “The Ultimate Fighter 9” winner Ross Pearson. Previously, he fought in the now-defunct Strikeforce, where he racked up a 6-1 record.

Prior to dropping out of UFC 159, Iaquinta sat on the bench following a submission loss to Michael Chiesa in the finale of “TUF 15,” which served as his official octagon debut. On the reality show, he won matchups against Myles Jury, Andy Ogle and Vinc Pichel before the setback.

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